Window assembly

ABSTRACT

A control assembly for a window assembly having a fixed window frame and an outwardly swinging casement window. The assembly includes a link which is pivoted at one end to a traveller nut carried by a jack screw and pivoted at its other end to the casement window at a point outwardly of the plane of the casement window. Vertical registering slots for the link are formed in the fixed window frame, the casement window and a mounting box which houses the jack screw and traveller nut.

United States Patent [191 Beaumont [451 Sept. 10, 1974 WINDOW ASSEMBLY [75] Inventor: Gregory Beaumont, Chermside,

Australia [73] Assignee: Meyers Taylor Pty., Ltd., Virginia,

Queensland, Australia [22] Filed: Nov. 28, 1972 [21] Appl. N0.: 309,990

[52] US. Cl. 49/85 [51] Int. Cl E05f 17/00 [58] Field of Search 49/85, 82, 87, 86, 83, 49/107, 341; 98/121 R [56] References Cited UNITED STATES PATENTS 1,479,452 l/1924 Canavan 49/85 X 2,252,634 8/1941 Justason 1 49/82 2,589,647 3/1952 Van Gelder et al.. 49/82 2,729,113 l/I956 Blanchard 49/82 X 2,923,037 2/1960 Muhr 49/82 X FOREIGN PATENTS OR APPLICATIONS 10,346 l0/l844 Great Britain 49/85 Primary ExaminerDennis L. Taylor Attorney, Agent, or Firm-Donald D. Jeffery 5 7] ABSTRACT A control assembly for a window assembly having a fixed window frame and an outwardly swinging casement window. The assembly includes a link which is pivoted at one end to a traveller nut carried by a jack screw and pivoted at its other end to the easement window at a point outwardly of the plane of the casement window. Vertical registering slots for the link are formed in the fixed window frame, the easement window and a mounting box which houses the jack screw and traveller nut.

5 Claims, 6 Drawing Figures PAIENIEU SEP 1 01914 SNEEY 1 BF 4 PAIENTED SEP 1 01974 3, 834,0?8

SHEET 2 OF 4 PAIENIEUSEPIOIBH $834078 SHEEI 3 BF 4 WINDOW ASSEMBLY THIS INVENTION relates to an assembly for opening and closing a window, and more particularly to a control assembly for windows of casement type, being particularly well suited to horizontally hinged casement windows of considerable width relative to their height, such as are used in some caravans.

One of the objects of the invention is to provide an opening and closing assembly whereby a window may be quickly and easily brought to fully opened or fully closed or any desired intermediate position, and firmly held in such position against strong pressures, for example from the wind.

A further object is to provide such an assembly in which the operative part of the assembly is attached inside the fixed frame of the window and operates an outwardly-opening, horizontally-hinged window.

Other objects achievable in preferred embodiments of the invention are to provide such an assembly which adjusts a window fitted with an insect screen, which need not be apertured for this purpose; and which may be such as to operate a series of casements simultaneously.

Accordingly the invention resides broadly in a control assembly for a framed, outwardly swinging casement window including a mounting box attached to the inside of a fixed window frame, a jack screw rotatable in the mounting box, a traveller nut engaged on the jack screw, a link pivoted at one end to said traveller nut, means for pivoting the link at its other end to the casement frame at a point outwardly of the plane of the casement frame, registering slots in the mounting box and the casement frame through which the link may pass, and means for rotating the jack screw in one direction or the other to cause the traveller nut to move the link so as to bring the casement window to open or closed position. Other features of the invention will become apparent from the following description.

A preferred embodiment of the invention is shown in the accompanying drawings, wherein:

FIG. 1 is a front elevation of a window assembly according to the invention, having two casements, shown fully closed,

FIG. 2 is a partly broken away front elevation of the window assembly, the casements being fully open,

FIG. 3 is a side elevation of the window assembly with the casements open, as in FIG. 2,

FIG. 4 is a detail drawing, to enlarged scale, showing one of the operating units of the window assembly with part of its casing removed,

FIG. 5 is a partly broken away rear elevational view of the arrangement of interconnected operating units of the window assembly, and

FIG. 6 is a sectional view, to enlarged scale, along the line 66 in FIG. 4.

The window assembly shown in the drawings is particularly suited to a caravan, and it includes a window frame 10 consisting of an extruded metal section formed with two bends through right angles to constitute two parallel sides and a bottom; and a transverse head piece 11 and a transverse division piece 12, both being extruded metal sections, interconnecting the window frame sides at the top and at an intermediate position. Screw holes 13 are formed through the peripheral part of the window frame to facilitate its fixing in a window opening.

The assembly has two similar casements, both glazed, each having a frame 14 consisting of an extruded metal section formed with two bends through right angles to constitute two parallel sides and a bottom, and a head piece 15 having its ends rigidly secured to the upper ends of the two frame sides.

The extruded section forming the head piece 15 of each casement frame 14 is shaped for hinged interfitment with the appropriately shaped extruded sections forming the window frame head piece 11 and transverse division piece 12, so both casements may be swung forwardly and up from closed position as shown in FIG. 1 to open position as shown in FIGS. 2 and 3.

A pair of mesh insect screens 16, each consisting of a panel of mesh within a frame 17, are fitted in the window frame, one in each of the openings to which a casement is fitted.

For simultaneously opening and closing the two casements, there are provided four operating units 18, 19, 20 and 21. These four units, which are in most respects similar, are mounted on the rear of a back flange 10a of the window frame 10, units 18 and 19 behind the two upper side portions of the lower casement, units 20 and 21 behind the two upper side portions of the upper casement.

Each of the operating units includes a box-like casing 22 composed of two moulded parts interfitted and held together by screws. Within the casing is a vertical jack screw 23 with square-section end portions (not shown) closely engaged in correspondingly shaped sockets formed axially in upper and lower jack bevel gears indicated at 24 and 25 respectively, these bevel gears having hubs rotatably mounted in bearings at 26 within the casing 22. Engaged on the jack screw 23 is a traveller nut 27 shaped for interfitment with vertical guides 28 formed within the casing to restrain the nut against rotation so that when the jack screw is turned in one direction or the other, the nut will be raised or lowered.

A link 29 is pivoted at one end, at 30, to the traveller nut 27, the link passing out through a vertical slot 310 in the front of the casing 22, and through a corresponding slot 31b through the flange 10a of the window frame 10, outwardly of the side of the insect screen frame 17. The end of the link remote from the traveller nut passes through an appropriate slotted opening 310 in a side of a casement frame 14 to enter a link box 32 mounted in front of the upper side portion of the casement frame, and wherein this end of the link is pivoted at 33.

By providing apivot 33 outside of rather than inside of the plane of casement frame 14, link 29, in windowclosed position, exerts an appreciable force on the window to keep it firmly closed since link 29 in this position is still angled relative to the plane of the window thereby effectively applying the closing force.

The parts are so made and arranged that when the traveller nuts 27 of the two operating units of a casement are simultaneously raised by rotation in the same direction of the engaging jack screws 23, the links 29 act to swing the casement forwardly and up to open position, and when the traveller nuts are caused to descend, the casement is brought to fully closed position.

To actuate the four operating units 18, 19, 20 and 21 simultaneously, the unit 18 is provided with a handle assembly 34 consisting of a shaft 35 rotatably mounted in bearings in the lower front and back of the casing 22 of this unit, and carrying a handle bevel gear 36 meshing with the lower jack bevel gear of this unit, a crank 37 with a handle. 38 being mounted on the rear end of the shaft and being operatively connected thereto by an overload clutch of any suitable type (not shown). Thus by operating the crank handle in one direction or the other the jack screw 23 of the operating unit 18 may be rotated to raise or lower the traveller nut 27.

Upon actuation of the operating unit 18 of the lower casement, the corresponding operating unit 20 of the upper casement is correspondingly driven, by means of an upright shaft 39 having squared ends (not shown) closely engaged in axial sockets in the upper jack bevel gear 24 of the unit 18 and in the lower jack bevel gear 25 of unit 20, the shaft 39 being rotatable within a tubular'shaft sleeve 40 the ends of which are engaged in holes in the upper end of unit 18 and the lower end of unit 20. It will be noted that the upper jack bevel gear 24 of unit 18, and the lower jack bevel gear 25 of unit 20 serve only as connectors between theupright shaft 39 and the jack screws 23 of the two units.

In similar manner, the two operating units 21 and 19 at the other side of the window frame are interconnected for simultaneous operation.

The two upper operating units 20 and 21 of the arrangement of units are interconnected for simultaneous operation by a cross shaft 41. The upper jack bevel gear 24 of operating unit 20 meshes with an outer shaft bevel gear 42, and the upper jack bevel gear 24 of the operating unit 21 meshes with an inner shaft bevel gear 43, the cross shaft 41 having squared ends closely engaging in axial sockets in the hubs of these bevel gears 42 and 43.

Consequently, by the operation of the single crank handle the two casements may be simultaneously brought to open or closed position, the two stays for each casement holding the easement firmly in any desired adjusted position, despite strong wind pressure. The control units may be made similarly, with weakened portions which may be readily cut through or broken away to permit the installation of parts which differ from unit to unit in the complete arrangement. The displacement of the pivotal connections of the links to the casement frames, being displaced to the front of the casement frames whereas the links are moved from the rear of the window frame, ensures that the easements will be held firmly in closed position.

Although window control assemblies as herein described and illustrated will be found to be effective in achieving the objects for which the invention has been devised. it will be understood, of course, that many modifications of constructional detail and design, which will be readily apparent to persons skilled in the art, may be made without departing from the scope of the invention as hereinafter claimed.

What I claim is: i

l. A control assembly for a window assembly having a fixed window frame and an outwardly swinging casement window hinged to said frame, said control assembly including at least one mounting box attached to the inside of said fixed window frame, a jack screw rotatable in said mounting box, a traveller nut engaged on said jack screw, means for rotating said jack screw for controlled movement of said nut, a link pivoted atone end to said traveller nut, means for pivoting said link at its other end to said casement window at a point outwardly of the plane of said casement window; and vertical registering slots in said mounting box, said fixed window frame, and said casement window, said link passing through said slots, thereby permitting said link to swing said casement window relative to said fixed frame.

2. The control assembly of claim 1 in which said means for pivoting said other end of said link to said casement window is mounted within a box projecting from and sealed to the front of said casement window.

3. The control assembly of claim 1 wherein said mounting box is attached to one side of said window frame, and lateral connecting means are provided for operatively connecting said jack screw to a second control assembly comprising a mounting box, jack screw, traveller nut and link at the. opposite side of the window frame for simultaneous rotation of both of said jack screws.

4. The control assembly according to claim 3 wherein said lateral connecting means includes a cross shaft having at its end bevel gear connections to said jack screws.

5. The control assembly of claim 1 further including vertical connecting means operatively connecting said jack screw to an upper control assembly comprising a mounting box, jack screw, traveller nut and link of an upper casement window, to provide simultaneous rotation of both of said jack screws. 

1. A control assembly for a window assembly having a fixed window frame and an outwardly swinging casement window hinged to said frame, said control assembly including at least one mounting box attached to the inside of said fixed window frame, a jack screw rotatable in said mounting box, a traveller nut engaged on said jack screw, means for rotating said jack screw for controlled movement of said nut, a link pivoted at one end to said traveller nut, means for pivoting said link at its other end to said casement window at a point outwardly of the plane of said casement window; and vertical registering slots in said mounting box, said fixed window frame, and said casement window, said link passing through said slots, thereby permitting said link to swing said casement window relative to said fixed frame.
 2. The control assembly of claim 1 in which said means for pivoting said other end of said link to said casement window is mounted within a box projecting from and sealed to the front of said casement window.
 3. The control assembly of claim 1 wherein said mounting box is attached to one side of said window frame, and lateral connecting means are provided for operatively connecting said jack screw to a second control assembly comprising a mounting box, jack screw, traveller nut and link at the opposite side of the window frame for simultaneous rotation of both of saiD jack screws.
 4. The control assembly according to claim 3 wherein said lateral connecting means includes a cross shaft having at its end bevel gear connections to said jack screws.
 5. The control assembly of claim 1 further including vertical connecting means operatively connecting said jack screw to an upper control assembly comprising a mounting box, jack screw, traveller nut and link of an upper casement window, to provide simultaneous rotation of both of said jack screws. 